Whether preventing ice-balls from forming between your pup's toes, protecting their paws from rocky trails during summer hikes, or keeping their little feeties off cold, salty sidewalks, our booties are designed with all seasons in mind. We teamed up with veteran sled dog racers in the USA to make the same booties their sled dogs wear. They're lighter, better fitting, and stay on more effectively than traditional, clunky rubber booties! DESIGN & DETAILS: Sold in sets of four or individually Lightweight breathable cotton-poly fabric Grippy rubber bottom Double hook & loop velcro closure straps Wash on gentle and lay to dry Each bootie measures .7 oz SIZING: Small (orange) - 3" wide x 5?" tall Medium (blue) - 3 1/2" wide x 5?" tall Large (green) - 4" wide x 5 1/2" tall Choose the size that is an inch bigger than the width of your dogs foot for proper fit. Measure the foot at the widest spot while your dog is standing with weight on the foot.